Patents by Inventor Ooi C. Keat

Ooi C. Keat has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Recovery of carotenoids
    Patent number: 5019668
    Abstract: A process for the recovery of carotenes and the production of carotene concentrates from palm oil. Esterified palm oil containing carotenes, or other solutions containing carotenes, is mixed with an edible oil, part by part. The resulting mixture is subjected to a pressure of less than 7.999 N/m.sup.2 and a temperature of less than 200.degree. C., without incurring substantial decomposition of the carotenes during the process.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: May 28, 1991
    Assignee: Palm Oil Research & Development Board
    Inventors: Ooi C. Keat, Choo Y. May, Augustine O. S. Hock